Why my boyfriend isn't interested in me?

My question is bit personal, I'm been in a relationship with my boyfriend for two years, I don't why he doesn't like me at all. He's bit old (he is 25 and I'm 19). I don't know if he's depressed or something I tried to talk to him about this and he got rude, some anger issues I've never seen in him before. All he do is go to work, gym and play videogames with bunch of other guys. One day he argued for hours and he kicked my cat even tried to push me. I don't know what he going through I just wanna help him, he's kinda possessed.
Updates
+1 y
Thank you so much everyone, it means a lot. I think I took a right decision but I don't know how its gonna make him feel I'm kinda scared too. everything was better in the beginning I've no idea what happened if its some mistakes from my side I'm still ready to fix it, I felt so helpless. Anyway thanks to you all!
Why my boyfriend isn't interested in me?
Post Opinion